8 LEAF STRAPS AND TOP MATERIAL: The sheet strap set includes 4 sheet straps in black and 4 straps in white. They are made of strong chrome metal clips and heavy-duty elastic cords that will hold your bed sheets tightly. STABLE TRIANGLE DESIGN: The 3-way triangle design is more stable than the 2-tie version; triangular mattress straps will keep your bed sheet tidy. difficult tasks. They are sturdy and easy to attach to all types of fabrics to ensure a flat, smooth surface. WIDE COMPATIBILITY: Bed sheet clips fit all types of bedding. They can be used on sheets, sofa cushions, underpads, etc. EASY TO USE: Attach 3 clips to the corner of your sheets, repeat the above procedure for all 4 corners and flip the fitted corner over the mattress, then adjust the tension of the straps. They will firmly grip your sheets and keep your bed clean.